EUVD-2026-30139
GHSA-5699-ppr6-8h44
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
2DescriptionCVE.org
A race condition in Grafana Live allows authenticated users with Viewer role to trigger a server crash by sending concurrent requests that cause a fatal map access error. This results in complete service unavailability requiring restart of the Grafana server.
AnalysisAI
Grafana Live's concurrent request handling exposes authenticated Viewer-role users as a denial-of-service vector: sending concurrent requests triggers a fatal map access error that crashes the entire Grafana server, requiring a manual restart to restore service. All Grafana OSS releases from 8.2.0 through 13.0.1 are affected across multiple maintained branches, making the exposure surface exceptionally broad. No public exploit identified at time of analysis and EPSS sits at 0.04% (12th percentile), but the low privilege bar - any Viewer account - and reliable triggering (AC:L) mean insider threats and compromised low-privilege accounts represent a realistic DoS risk for organizations without guest/anonymous access controls.
Technical ContextAI
Grafana Live is Grafana's real-time WebSocket/streaming subsystem that pushes live data updates to dashboards. The root cause is CWE-362 (Concurrent Execution Using Shared Resource with Improper Synchronization): an internal map data structure shared across goroutines lacks adequate locking, causing a fatal runtime panic when two or more goroutines simultaneously read and write the same map entry. In Go - the language Grafana is written in - concurrent map access without synchronization raises an unrecoverable runtime error that terminates the process entirely, explaining why the outcome is a full server crash rather than a partial failure. The CPE string cpe:2.3:a:grafana:grafana_oss:*:*:*:*:*:*:*:* confirms only Grafana OSS is in scope; Grafana Enterprise is not listed in the affected CPE data.
RemediationAI
The primary fix is to upgrade to one of the vendor-released security patch builds, depending on the installed branch: 11.6.14+security-04, 12.2.8+security-04, 12.3.6+security-04, 12.4.3+security-02, or 13.0.1+security-01, all documented at https://grafana.com/security/security-advisories/cve-2026-28379. If an immediate upgrade is not feasible, administrators should restrict Grafana access to trusted authenticated users only by auditing and minimizing Viewer-role accounts, and consider placing Grafana behind a network perimeter that limits who can reach the service - noting that this reduces but does not eliminate insider risk. Disabling Grafana Live entirely may be possible in some configurations and would eliminate the vulnerable code path, but could impact real-time dashboard functionality; consult Grafana documentation for the live.enabled configuration key. Enforcing rate limiting on concurrent WebSocket or streaming connections at a reverse proxy layer (e.g., nginx limit_conn or similar) may raise the bar for reliable exploitation but is not a substitute for patching.
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Same weakness CWE-362 – Race Condition
View allSame technique Denial Of Service
View allVendor StatusVendor
SUSE
Severity: Medium| Product | Status |
|---|---|
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | Fixed |
| SUSE Manager Client Tools 15 | Fixed |
| SUSE Manager Client Tools for SLE 15 | Fixed |
| SUSE Multi-Linux Manager Client Tools for SLE 15 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Fixed |
| openSUSE Leap 15.3 | Fixed |
| openSUSE Leap 15.4 | Fixed |
| openSUSE Leap 15.5 | Fixed |
| openSUSE Leap 15.6 | Fixed |
| SUSE Multi Linux Manager Tools SLE-15 | Fixed |
| ses/7.1/ceph/grafana ses/7/ceph/grafana suse/multi-linux-manager/5.2/x86_64/monitoring-grafana | Fixed |
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